the pentagon says a u.s. military effort to seize syria's stockpiles of chemical weapons would require upward of 75,000 troops and "the times" reports that senior american officials are concerned that hezbollah has set up camp near the chemical weapons depose. the white house declined to comment. >>> four people were killed in texas when a freight train slammed into a parade float carrying wounded veterans. this is just terrible. it's an accident that happened at a railroad crossing in midland, texas, as the float tried to get around the safety gates and lights. the float was made with a flatbed trailer. in addition to the four deaths, there were 17 people injured. m midland's mayor reacted to the accident. >> this may be one of the most tragic events we've had in our town and it's a sad day. i shook their hands and saw them personally and met their wives. it truly was an honor to be in their presence. these guys are true american heroes. >> that's for sure. secretary of defense leon panetta issued a statemen